#cyathium

[melobotanicsnursery]

'Euphorbia cooperi' also known as the Transvaal Candelabra, is a succulent tree that is capable of growing up to 10 metres tall. Branches curve upwards and contain bisexual (both male and female) flowers that are clustered along the ridges between the spines.

This is a widespread species usually found on rocky outcrops and semi-arid grasslands. This plant is still considered quite young in succulent terms, and will develop a flat topped crown and woody tree-like stem as it ages.

Euphorbia is a highly diverse genus that contains 2400 species to date - All producing the characteristic white latex sap which is somewhat toxic.

[ruthbancroftgarden]

Euphorbia susannae & Euphorbia obesa

Euphorbia is a very large genus with a world-wide distribution, but some of the most interesting and highly succulent kinds come from Africa. The flowering structures for Euphorbia are unique, and they are known as “cyathia” (the singular is “cyathium”). The cyathium may or may not have a stalk, but above it consists of a cup-like structure with 5 glands around its rim. In the middle of the cup is a stripped-down flower or flowers, with no petals or sepals. The upper photo shows the cyathia of Euphorbia susannae, whose glands start out greenish-yellow and then take on orange tinges as they age. The female flowers in the photo also change color, reddening as they get older. The lower photo shows a single cyathium of Euphorbia obesa, with green glands. Both species are native to South Africa.

-Brian

[phytophiliac]

Euphorbia grantii. Euphorbia cyathia (aka flowers) are so strange that botanists have a whole different vocabulary for them. I'd guess that the white goo on these cyathia are some sort of enticement or reward for pollinators but don't know that for certain. A couple of interesting tidbits gleaned from Wikipedia are: It is often grown as a hedge plant and as a traditional grave marker among the peoples of central Kenya In 1952 during the Mau Mau Uprising, the poisonous latex of the plant was used to kill cattle. #Euphorbia_grantii #Euphorbia #grantii #cyathia #cyathium #flowers #macro #CUgreenhouse. (at CU Greenhouse) https://www.instagram.com/p/CYhR0kSF8cb/?utm_medium=tumblr